condition mean min max ZT0-3 8.730008004 5.951430368 11.50858564 ZT4-7 32.2048146925 24.35950869 40.050120695000004 ZT8-11 12.69161074925 6.350193484 19.0330280145 ZT12-15 0.49500469775 0.014573466 0.9754359295 ZT16-19 0.0 0.0 0.0 ZT20-23 0.0 0.0 0.0